  aff2ab - linear (affine) function to A,b conversion
  balanc - matrix or pencil balancing
  bdiag - block diagonalization, generalized eigenvectors
  chfact - sparse Cholesky factorization
  chol - Cholesky factorization
  chsolve - sparse Cholesky solver
  classmarkov - recurrent and transient classes of Markov matrix
  coff - resolvent (cofactor method)
  colcomp - column compression, kernel, nullspace
  companion - companion matrix
  cond - condition number
  det - determinant
  eigenmarkov - normalized left and right Markov eigenvectors
  ereduc - computes matrix column echelon form by qz transformations
  exp - element-wise exponential
  expm - square matrix exponential
  fstair - computes pencil column echelon form by qz transformations
  fullrf - full rank factorization
  fullrfk - full rank factorization of A^k
  genmarkov - generates random markov matrix with recurrent and transient classes
  givens - Givens transformation
  glever - inverse of matrix pencil
  gschur - generalized Schur form (obsolete).
  gspec - eigenvalues of matrix pencil (obsolete)
  hess - Hessenberg form
  householder - Householder orthogonal reflexion matrix
  im_inv - inverse image
  inv - matrix inverse
  kernel - kernel, nullspace
  kroneck - Kronecker form of matrix pencil
  linsolve - linear equation solver
  lsq - linear least square problems.
  lu - LU factors of Gaussian elimination
  ludel - utility function used with lufact
  lufact - sparse lu factorization
  luget - extraction of sparse LU factors
  lusolve - sparse linear system solver
  lyap - Lyapunov equation
  nlev - Leverrier's algorithm
  orth - orthogonal basis
  pbig - eigen-projection
  pencan - canonical form of matrix pencil
  penlaur - Laurent coefficients of matrix pencil
  pinv - pseudoinverse
  polar - polar form
  proj - projection
  projspec - spectral operators
  psmall - spectral projection
  qr - QR decomposition
  quaskro - quasi-Kronecker form
  randpencil - random pencil
  range - range (span) of A^k
  rank - rank
  rankqr - rank revealing QR factorization
  rcond - inverse condition number
  rowcomp - row compression, range
  rowshuff - shuffle algorithm
  rref - computes matrix row echelon form by lu transformations
  schur - [ordered] Schur decomposition of matrix and pencils
  spaninter - subspace intersection
  spanplus - sum of subspaces
  spantwo - sum and intersection of subspaces
  spchol - sparse cholesky factorization
  spec - eigenvalues of matrices and pencils
  sqroot - W*W' hermitian factorization
  sva - singular value approximation
  svd - singular value decomposition
  sylv - Sylvester equation.
  trace - trace